Nut-lock.



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the piece `of material 2 is an ordinary washer 4.

--tangular washer having integral side walls i- ROBERT BOLES, OF ELDERSVILLE, PENNSYLVAN IIA.

:NIIT-LOOK.

Speciflcation of letters Patent.

Patenteu apa aa, rara.

application fliea February 1, 1912. serial no. 674,641.

To all whom it may concern: I I

Be it known that I, RoisER'r BoLns, a Vcitizen of the United States of America, resid- 'ing at Eldersville, in the 'count-y of Wash- 5 ington and State of Pennsylvania, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification, reference being had there- 4 in to the accompanying drawing.

This invention relates to nut looks, and my invention aims to provide a nut locking device that can' be advantageously ,used in connection with rail joints, bridges, rolling stock and structures subjected to vibrations that have a tendency, to displace .nuts.

My invention further aims to provide a nut locking device that is simple in construction, durable, easy to apply and highly efiicient for the purposes for which it is intended.

The invention still further aims to accomplish the above results by a mechanical construction that will be hereinafter specifically -described and then claimed.

25) Reference will now be had 'to the drawing,

. wherein:-` Figure 1 'is a side elevation of the nut locking device, partly broken away and partly in section. Fig. 2 is a perspective 30 view of'a detached nut, and Fig. 3 is a similar view of' a detahedwashe'r.

. TheV reference numerals 1-and denote,H

' by way of an 1 terial connected by a bolt 3 and arranged f example, two pieces of ma- `1pon the threaded end of said bolt against lThe reference numeral 5 adapted toV be screwed u onthe bolt 3, said nut having one of the sidliJ walls thereof provided with -a transverse slot or slit 6, and one of the facets thereof adj'oining the slitted, wall of the nut cut away to provide a beveled portion 7.

9 and 10, the wall 10 having an intergal wedge 11 adjacent to one of ,the walls 9,

denotes a nut' T-he reference numeral 8 denotes a recthe Wedge gradually tapering from -the washer 8.to the outer edge of the wall 10 and corresponding in width to the cut away beveled portion 7 of the nut 5.

lThe nut 5 is placed within the washer 8l With the wedge 11 engagingthe cut away beveled portion '7 of the nut 5, With the washer upon the nut, said nut is screwed upon the bolt until lthe washer 8 engages the washer 4. As the nut and washer are tightened the threads of the bolt cause the nut to ride into the washer and during this movement of the washer the wedge 11 engaging the beveled portion 7 of the nut tends to close the slit or slot 6, thereby causing the threads of the nut 5 to clamp the threads of the bolt 3.

From the foregoing it will be observed that the nut locking device can be easily and quickly installed in connection with an ordinary bolt and that the nut locking device can be removed without injury to either the bolt or nut. Furthermore, the washer 8 can be easily stamped or punched from metal and the slitting and cutting away of the nut 5 performed at the same time said nut is provided with a threaded bore.

While in the drawing there is illustrated a preferred embodiment of the invention, it is to be understood that the structural elements are susceptible to such changes as fall within the scopeof the appended claim.

What I claim is:--

In a nut locking device, the combination with a bolt, of a washer, integral walls carried thereby, a wedge carried by the inner side of one of said walls, a slit nut arranged in said washer and having a beveled facet engaged by the 'Wedge of said washer, said nut and said washer being screwed upon 

